With Superman, Wonder Woman and Green lantern joining the Dark Knight in Lego Batman 2, you're pretty much going to be able to assemble a miniature Justice League in the block-happy sequel. But since when it comes to hero team-ups, four measly characters is barely an appetizer. You'll be happy to know, then, that more characters will apparently be showing up in the game. But it's a little less exciting that find out that extra characters like Damian Wayne, Katana and others will be coming via retailer exclusive pre-orders.